Viewers will get a rare look inside Walt Disney Animation Studios and unprecedented access to the creative team that brought Frozen to life. The special will also include a never-before-seen preview of Frozen's Elsa and Anna on Once Upon a Time.

WATCH: On the Once Upon a Time season finale, Frozen's Elsa traveled through the time portal to Storybrooke.

Throughout the one-hour special, the audience will hear from Frozen stars Kristen Bell and Idina Menzel, the directors Jennifer Lee and Chris Buck, songwriters Kristen Anderson-Lopez and Robert Lopez, producer and artists and chief creative officer — the team who dreamed of making a cherished Hans Christian Andersen story into a big screen animated musical.